MAX9940AXK+T

MAX9940AXK+T is Maxim Integrated’s MAX9940 buck regulator in the AXK package, supplied in tape-and-reel (T) format. It’s a high‑efficiency DC‑DC converter used to step down a higher input voltage to a lower regulated output for power-sensitive electronics. Typical features include fixed‑frequency, current‑mode control; enable/soft‑start; overcurrent/short‑circuit protection; undervoltage lockout; thermal shutdown; and an external feedback network to set the output voltage. The device is aimed at compact, power‑dense designs for portable, automotive, and industrial applications requiring efficient conversion with minimal components. The +T suffix denotes reel packaging, and AXK specifies the package variant. For exact electrical characteristics—input voltage range, output voltage options, switching frequency, and maximum output current—consult the MAX9940 datasheet and package drawings.

Manufacturer: Maxim Integrated Products (now part of Analog Devices, Inc.).
What kind of company: A semiconductor company that designs and manufactures analog and mixed-signal integrated circuits (ICs) for power management, data conversion, interfaces, sensors, and related applications.

MAX9940AXK+T is a power-management/DC-DC conversion IC. Typical application areas include:
- Portable, battery-powered devices (cell phones, tablets, wearables)
- LCD/LED backlight power supplies
- Automotive instrumentation and infotainment power rails
- Industrial control and data-communication equipment
- USB-powered and general consumer electronics requiring compact, high-efficiency regulation
In short: any compact system needing efficient on-board voltage regulation and multiple rails from a single supply.

The MAX9940AXK+T comes in an 8‑pin μMAX (3×3 mm) package, and the “+T” suffix indicates Tape & Reel packaging.